<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '350px'
    },
    autoResize: {
      type: Boolean,
      default: true
    },
    chartData: {
      type: Object,
      required: true
    }
  },
  data() {
    return {
      chart: null
    }
  },
  watch: {
    chartData: {
      deep: true,
      handler(val) {
        this.setOptions(val)
      }
    }
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')
      this.setOptions(this.chartData)
    },
    setOptions({ xlabel, completedCount } = {}) {
      this.chart.setOption({
        xAxis: {
          data: xlabel,
          type: 'category',
          boundaryGap: true,
          axisTick: {
            alignWithLabel: true
          }
        },
        grid: {
          left: 10,
          right: 10,
          bottom: 20,
          top: 80,
          containLabel: true
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross'
          },
          padding: [8, 10]
        },
        yAxis: {
          axisTick: {
            show: false
          }
        },
        legend: {
          data: ['完成数']
        },
        series: [{
          name: '完成数',
          type: 'bar',
          stack: 'total',
          barMaxWidth: 35,
          barGap: '10%',
          itemStyle: {
            normal: {
              color: 'rgba(0,191,183,1)',
              barBorderRadius: 0,
              label: {
                show: true,
                position: 'top',
                formatter(p) {
                  return p.value > 0 ? p.value : ''
                }
              }
            }
          },

          smooth: true,
          data: completedCount,
          symbol: 'circle',
          symbolSize: 5,
          showSymbol: true,
          animationDuration: 2800,
          animationEasing: 'cubicInOut'
        }
        ]
      })
    }
  }
}
</script>
